Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces

117 Pages·2015·2.651 MB·English

by  Christian Rockenhäuser (auth.)

MatWerk
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stellung technischer Werkstoff e mit neuen oder verbesserten Eigenschaft en. Die
Eigenschaft en eines Bauteils sind von der Werkstoff auswahl, von der konstruk-
tiven Gestaltung des Bauteils, dem Herstellungsprozess und den betrieblichen
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Reihe steht sowohl Nachwuchswissenschaft lern als auch etablierten Ingenieurwis-
senschaft lern off en.
Christian Rockenhäuser
Electron Microscopical
Investigation of
Interdiff usion and
Phase Formation at
Gd O |CeO and
-
2 3 2
Sm O |CeO Interfaces
-
2 3 2
With a Foreword by Prof. Dr. Dagmar Gerthsen
123
Christian Rockenhäuser
Karlsruhe, Germany
Dissertation, Karlsruhe Institute of Technology (KIT), 2014
MatWerk
ISBN 978-3-658-08792-0 ISBN 978-3-658-08793-7 (eBook)
DOI 10.1007/978-3-658-08793-7
Library of Congress Control Number: 2015933629
Springer
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Electron Microscopical Investigation of
Interdiffusion and Phase Formation at
Gd O /CeO - and Sm O /CeO -
2 3 2 2 3 2
Interfaces
Zur Erlangung des akademischen Grades eines
Doktors der Naturwissenschaften
von der Fakulta¨t fu¨r Physik
des Karlsruher Instituts fu¨r Technologie (KIT)
genehmigte
Dissertation
von
Dipl.-Phys. Christian Rockenh¨auser
aus Neuenbu¨rg
Tag der mu¨ndlichen Pru¨fung: 27.06.2014
Referentin: Prof. Dr. D. Gerthsen
Korreferent: Prof. Dr. M. J. Hoffmann
angefertigt am
Laboratorium fu¨r Elektronenmikroskopie
Karlsruher Institut fu¨r Technologie (KIT)
Partsandexcerpsofthisthesishavealreadybeenpublishedasjournalarticles.
Figures are reprinted with permission:
(cid:2)c 2013 Elsevier
Reprinted (adapted) from the Journal of the European Ceramic Society 34 by
C. Rockenha¨user, B. Butz, N. Schichtel, J. Janek, R. Oberacker, M. J. Hoff-
mann, and D. Gerthsen, ”Microstructure evolution and cation interdiffusion in
thinGd O filmsonCeO substrates”,Pages1235-1242,(cid:2)c 2013,withpermis-
2 3 2
sion from Elsevier.
(cid:2)c 2014 American Ceramic Society
Reprinted (adapted) from the Journal of the American Ceramic Society 97 by
C. Rockenh¨auser, B. Butz, H. St¨ormer, and D. Gerthsen, ”Microstructure evo-
lutionandcationinterdiffusioninthinSm O filmsonCeO substrates”,Pages
2 3 2
3276-3285, (cid:2)c 2014, with permission from Wiley-Blackwell
(cid:2)c 2010 Christian Rockenh¨auser
Partsofgraphsfrommydiplomathesis”Sm O -CeO interdiffusionstudiesby
2 3 2
transmission electron microscopy” are reprinted in adapted form.
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Acknowledgement
I want to thank Everyone, who contributed to the successful completion of my
dissertation.
FirstandforemostIexpressmygratitudetoProf. Gerthsenfortheexcellent
supervision and that she made this work possible at the LEM. Her patient
revision of my manuscripts helped me a great deal – formulating scientifically
correctandprecisedoesnotonlyrequirepractice,butalsoinstructionon”how
on does it”. I also want to thank to be given the possibility to participate in
conferences.
I thank Prof. Hoffmann for the giving the second assessment and the
friendly help and support at the IAM-KM with the fabrication of the CeO
2
substrates and targets for the PLD.
IalsothankNicoleSchichtelandProf. JanekatthePhysikalisch-Chemischen
Institut for the thin film deposition utilizing PLD.
I am grateful to Benjamin Butz for giving the initial impulse to this study.
Additionally I was introduced into operating electron microscopes by him and
thank him for many productive hours at the microscope.
Many thanks go to Heike Sto¨rmer for the correction of several manuscripts
and parts of the thesis. And also the discussions about phase diagrams helped
me very much.
I also want to give a big thank you to Miss Sauter, who always had some
encouragin words for me in every situation.
I also want to express kind regards to my colleagues at the LEM. The
discussion of various physical, non-physical and meta-physical topics in the
”Kaffeeraum”(coffee room) were very enriching as well as the exquisite pastrys
of the ”Backstubenba¨cker”. The LEM-Lauffreunde are also very important,
since they see to it that one does not only sit at the desk.
Manythankstomymomanddad,Florian,Lisa-Marie,Annerose,Wolfgang,
and Heike for motivation and support when I needed it.
Stefan,withoutyouIwouldnotsucceeded! Thankyou,thatyouwerethere
for me!
Dr. Christian Rockenha¨user